The invention relates to a knife (100), which comprises a substantially longitudinal grip handle (10) and a blade (20), which are connected with the handle (10) and longitudinally extend the handle (10, 10, 10, 0, 0, 0, 0, 0, 0, 0, 0).Wherein the handle (10) is hollow and has an operable adjusting device (30) configured to move the center of gravity of the knife (g) (100) (10) along the handle,The knife ((100) also includes an external control device (() 40) configured to manually operate an adjustment device (() 30 () (10) external to the handle.
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